理論推力系數 的英文怎麼說

中文拼音 [lǐlúntuīlìxìshǔ]
理論推力系數 英文
theoretical thrust coefficient
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 論 : 論名詞（記錄孔子及其門徒的言行的「論語」） the analects of confucius
  • 推 : 動詞1 （向外用力使物體移動） push; shove 2 （磨或碾） turn a mill or grindstone; grind 3 （剪或削...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 理論 : theory
  • 推力 : visatergo; soot; propulsive force; thrust; momentum thrust
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. This text expanded the magnetoelastic stability issue of current - carrying component from coil, pole piece to thin current - carrying plates, and used special function to differentiate the critical state of losing magnetoelastic steady, the number value of getting the relevant parameter is solved. the text derives and provides the magnetoelastic movement equation of thin current - carrying plates, the geometry equations and the physics equations, the expression formula of lorent ’ s force, electro dynamics equation through the theory at first

    本文將載流構件磁彈性穩定問題由線圈、桿件拓展到載流薄板，並引入特殊函數判別磁彈性穩定問題的失穩臨界狀態，得到了相關參量的數值關系。首先通過理論推導給出了載流薄板的磁彈性動力學方程，幾何與物理方程，洛侖茲力的表達式，電動力學方程。
  2. Through the analysis we found that the effect will become more obviously with the increase of thickness or width of superstratum and the decrease of the coefficient of foundation bed ; ( 3 ) anisotropy and nonlinear elastic f. e. m. model has been established and the effect of stress dispersion in compound two - layer foundation was analyzed on the base of the model. from the analysis we can conclude that the coefficient of subsidiary stress dispersion will amplify with the increase of thickness or width or stiffness of back - up coat ; ( 4 ) the formula which can be used in conventional calculation has been deduced for calculating the coefficient of subsidiary stress dispersion and it also has been affirmed to be reasonable through the checking calculation ; the whole theory of compound two - layer foundation has been brought forward in this paper and it ' ll enrich the theory of composite foundation

    針對以上問題本文做了以下一些工作並得到若干結論： （ 1 ）提出了「復合雙層地基」的概念，並通過工程實例證明此概念的提出有其合理性和必要性； （ 2 ）用彈性地基梁理論證實了復合雙層地基確有應力擴散效應，且擴散效應隨上覆硬層厚度、剛度的增加而增大，隨下臥層基床系數的增大而減小； （ 3 ）建立了非線彈性、各向異性有限元模型，並以此為基礎分析了復合雙層地基的應力擴散效應，得到附加應力系數隨加固層厚度、寬度、剛度的增加而增大的結論； （ 4 ）推導了可用於常規計算的復合雙層地基應力擴散系數公式，並代入工程實例進行了驗證。
  3. Abstract : on the basis of general principles of mechanics and critical state soil mechanics theory, a theoretical formula determining the coefficient of earth pressure at rest for cohesionless soil is derived by means of combining hypoplasticity with critical state soil mechanics. the formula has a simple form and is only related to the effective angle of internal friction of soil. there is a slight difference between the calculated value of the formula and that of other formulae. the further investigation of the formula shows that it can be used to determine the coefficient of earth pressure at rest of cohesionless soil

    文摘:在滿足一般力學原理和臨界狀態土力學理論的基礎上，本文將亞塑性理論與臨界狀態土力學相結合，推出了一個計算無粘性土靜止土壓力系數的理論公式.該公式形式簡單，僅與土的有效內摩擦角有關，其計算結果與常見的多個經驗公式的計算結果只有微小的差別.文中討論結果表明，該公式可用於確定無粘性土的靜止土壓力系數
  4. In the past, more emphasis has been put on the flow pattern and the division ratio of water and sediment discharge. in order to study the division characteristics, a theoretic model is proposed in this thesis, which combines the plan configuration of channels with the minimum energy dissipation rate theory

    本文將河流動力地貌學中的平面形態和最小能耗率理論相聯系，研究分汊河道的分流特性，並推導理論分流模式；另一方面，通過建立二維水流數學模型，與理論分析結果進行比較。
  5. This paper proves that the changes of pre - compression on the windings have effects on their natural frequencies and derives their relation, which provides the experimental and theories foundation for fault diagnosis of large - scale electric transformers

    通過對大型變壓器繞組進行振動實驗和根據建立的變壓器繞組軸向振動數學模型的理論推導，闡明了變壓器繞組預緊力的變化與其固有頻率變化之間的關系，這為大型變壓器的故障診斷提供了理論與實踐依據。
  6. In the first part of this dissertation, theory of fracture mechanics of the frozen soil has been presented. a general strength theory based on fracture mechanics was proposed, and the validity of the theory using in frozen soil was discussed. the fracture toughness values for different kinds of cracks extension were determined, such as the plane strain fracture toughness for mode i cracking ( kic ), fracture toughness for mode cracking of frozen soil and the intersection of frozen soil and concrete

    論文第二章為凍土斷裂力學的基本理論，包括斷裂力學在凍土研究中的工程適用性、條件適用性、平面應變斷裂韌度測試的適用條件等，給出了凍土斷裂韌度k _ （ c ） 、 k _ （ c ） 、 -型復合斷裂測試的基本原理及試驗方法，並基於weibull脆性破壞理論推導了凍土三點彎曲試樣k _ （ c ）尺寸效應系數，為後面的工作提供理論基礎。
  7. In the tidal estuary, the current is complex, and the flow is oscillatory. some experiential formulation has presented to calculate the vertical turbulent mixing coefficient. on the base of analysis of the hydrodynamic in the estuary, the theoretical equation, which describes the distribution of the space and time of vertical turbulent exchange coefficient, has developed, the equation has applied to the practice

    潮汐河口水流呈往復振蕩運動，本文在分析潮汐河口水動力特性基礎上，考慮了慣性力及重力等項的影響，通過理論推導得到潮汐河口垂向紊動交換系數的空間分佈及時間分佈的計算公式，以及垂向平均紊動交換系數的時間分佈的計算公式，並將其應用於潮汐河口的實際計算中。
  8. We have deduced the iterative formula by the theory of the dynamic system, proved that the quadratic convergence holds under the weak conditions, and done the numerical experiments

    利用動力系統理論推導出該方法的迭代公式，證明其在某些弱條件下至少是二階收斂的，最後給出了數值結果。
  9. This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

    本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。
  10. Cfd is also used to get the data of performance parameters of the nozzle at different nozzle pressure ratio, different nozzle area ratio and different geometric defected angle. the theory of function approximation is used to establish the transient model of thrust vectoring with the data calculated

    本文通過cfd計算獲得矢量噴管的性能參數，如流量系數、推力系數以及有效推力矢量角等與矢量噴管壓比、面積比以及幾何偏轉角之間的關系數據，並利用函數逼近理論建立了矢量噴管的動態數學模型。
  11. Based on the sound wave transferring theory of infinite elastic and viscoelastic materials with the method of transferring matrix, the formulas of transmission coefficient and the level of sound insulation are gained, which consider shearing strength in the rubber, and the sound insulation properties of compound structures are discussed in condition of oblique incidence

    摘要基於無限大彈性體和粘彈性體的波傳遞理論，採用傳遞矩陣的方法，對斜入射情況下的透射系數和隔聲量進行了理論推導，考慮了聲波在橡膠中傳播所產生的剪切力，並就單層復合結構的隔聲性能進行了詳細的研究，進而也分析了多層復合結構的隔聲性能。
  12. Abstract : tensile reducer is one of the necessary apparatuses during the pipe production process at present. this paper deduces a multi - variation formula by using the energy principle and adopting upper limit method. the formula can be used to calculate the parameters such as the drive power, tensile coefficient, roll speed, depth of exit pipe wall, hole type ellipse etc. the existence of minus drive power has also been theoretically calculated

    文摘:張減機是鋼管生產中不可缺少的設備之一.本文從一般能量原理出發，採用上限法推導出一個多變量公式，利用該公式可求解電機功率、張力系數、軋輥轉速、出口鋼管壁厚、孔型橢圓度等參數，並且從理論上計算出電機負功率的存在
  13. At last, we can get the limit bearing capacity formula of concrete filled steel tube long column subjected to axial compress. on the basis of the theoretical analysis, twelve samples which have four kinds of long diameter ratio are studied experimentally

    在理論推導的基礎上，對四種長細比12個鋼管混凝土軸心受壓長柱進行了試驗研究，量測了鋼管混凝土軸心受壓長柱在試驗過程中各階段的承載力、應變、縱向變形系數等。
  14. The research of human resource value measure models of this paper has very important theoretical meaning and realistic significance. under the guidance of marxian labor valve theory and occident human capital theory and element distribution theory, this paper aims at the high science & technology software development enterprise and designs model systems of human resource group value and individual value measuring, which not only adhere the traditional accounting principle, but also combine qualitative analysis with quantitative analysis. in detail, it is organized as follows : ( 1 ) according to some defects of the available value measuring models, this thesis brings forward 4 innovative trains of thought : adopts the method that combine qualitative analysis with quantitative analysis, and establishes the new measuring basis that contain human resource the present period input cost and realized value, and defines the high - grade human resource as the target evaluation group of individual value measuring, as the basis for revealing the real contribution of human resource group firstly and achieving individual value by distributing group value to the target evaluation group in according with the specific rules secondly ; ( 2 ) analyzes the constitution of human resource value, and comes up with new way of thinking on group value measuring : adopts the historical cost means to calculate human resource group the present period input cost, and rectifies the present period realization value theory of li - shicong professor from accounting angle, and obtains more scientifically the group present period new contribution value, as the basis for structuring the new measuring

    首先揭示組織中人力資源群體對企業的真實貢獻，然後再將群體價值以一定的規則分配給目標評估群，從而確認個人價值; （ 2 ）分析人力資源的價值構成，提出新的群體價值計量思路:採用歷史成本法計量群體當期投入成本，並對李世聰教授提出的當期實現價值理論從會計學角度進行了修正，更為科學地確定了群體當期新增貢獻價值，從而構建了全新的人力資源群體價值計量模型; （ 3 ）分析個人價值的影響因素及其關系，提出新的個人價值計量思路:運用層次分析法獲得目標評估群在群體當期新增價值中的權重，確定高級人力資源當期所創造的貢獻份額;基於崗位相對權重和個人崗位績效評估值這兩個關鍵指標，將層次分析法和關聯矩陣法結合起來，計算個人貢獻價值系數，確定某個體在目標評估群中的權重，從而構建了全新的人力資源個人價值計量模型; （ 4 ）選取了一家人力資本含量較高的it公司，將所構建的理論模型在該公司進行了實證檢驗，驗證了模型體系在實務中的科學性與可操作性，從而在一定程度上豐富了人力資源價值計量理論，推動了人力資源會計與現行會計核算體系的接軌。
  15. Based on unified strength theory, the boundary line equation of surrounding rock mass plastic zone under non - uniform stress field was deduced, and it can be used to pre - estimate the dimensions and shapes of underground tunnel ' s plastic zone with different coefficients of horizontal pressure

    摘要基於統一強度理論，推導出非均勻應力場的巷道圍巖塑性區邊界線方程式，可用於預測不同側壓系數時地下深埋隧洞的塑性區大小及形狀。
  16. Under the promise of the practical applica tion an frugality, we determined the formula of sfpc and the stud y range. according to principle of damage mechanics, we deduced one axis tensile - compressive stress - strain relations and numeral fitt ing results with the finite element method. with experiment curve and stress - strain curve, we prove theorization method is practical

    根據損傷力學原理建立了材料單軸抗拉一抗壓本構模型，並應用有限元軟體對其進行了數值擬合，通過實驗曲線、本構模型曲線之間的關系，證明了理論推導方法的可行性。
  17. Abstract : calculation formulas are established based on the functions of given movement and dynamical conditions by means of extremum theory, making analytical design of an offset slider - crank mechanism more convenient and good for extend

    文摘:本文根據偏置曲柄滑塊機構的運動特性和傳力特性所建立的函數關系，運用極值理論推導出給定條件下傳力特性最佳的計算公式，大大方便了設計應用，值得推廣。
  18. In the finite element method analysis, the constitutional relationships of steel and three - dimension compressed concrete were conducted by using increment plastic theory. in the paper a serious of joint models were analyzed by using the program ansys and the mathematical formulas for determination of load - carrying capacity of shearing and bending in the joint region were also given. at last the influence of many parameters to the load - carrying capacity in the joint region was analyzed and some suggestions were given for the design in the practical projects

    在有限元分析中，用增量塑性理論推導出鋼材以及三維受壓混凝土的本構關系，重點是三維受壓混凝土的本構關系，建立了模型的單元剛度矩陣，給出了程序中非線性方程的求解方法，並用ansys軟體計算了一系列節點模型，得出了節點域的抗剪、抗彎承載力及各參數對節點域承載力的影響情況，並用試驗結果和計算公式驗證了有限元計算結果。
  19. Based on adaptive control theory, respectively study the system consisting of non - redundant robots and the system made up of redduant robots, proposing classes of adaptive control strategies for trajectory tracking and internal force tracking of robot manipulators with uncertainties. though the controller for the system consisting of nonredduant robots dot not satisfy the condition persistent - exciting, it guarantees the system be stable ; for the system consisting of redduant robots, firstly we derive a new dynamic equation based on the manifold embedding theory in geometry, then design a controller without solving the represser of the system

    對于非冗餘的具有參數不確定性的多個機器人系統，給出了一種自適應控制器的設計法，此控制器保證即使系統不滿足pe條件，系統的內力軌跡仍漸進穩定；對于冗餘的機器人系統，利用微分幾何中的流形嵌入理論推導出一種新的機器人動力學方程，利用此方程設計出一種無須求系統回歸矩陣的控制器，從而提高了系統的運算速度。
  20. Thirdly, through analyzing the relation between the temperature and vibration stress and the life of connector, and combining with the theory of probability and statistics, deduce the failure physics equation, and set up a reliability statistical model. laid a foundation for working out electrical connector reliability test plans and treating electrical connectors test data

    第三，通過研究環境溫度和振動應力與電連接器接觸壽命之間的影響關系，並結合概率統計理論，推斷出失效物理方程，建立了可靠性統計模型，為電連接器可靠性試驗方案的制定和試驗數據的統計分析奠定了基礎。
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